KENNEDY SPACE CENTER, FLA. -- A technician carefully monitors progress as Discovery's payload bay doors close around the Hubble Space Telescope (HST). The payload bay was closed for flight at 6:24 a.m. Sunday, April 8. The STS-31 launch is scheduled for 8:47 a.m. Tuesday, April 10. With HST, astronomers will be able to view 97 percent of the known universe, and will be able to get pictures unlimited and undistorted by the Earth's atmosphere. Compared with earth-based observatories, the HST will be able to view celestial objects that are 50 times fainter, provide images that are 10 times sharper, and see objects that are seven times farther away. .